Mario Sandoval was an Argentinian police officer and academic who is considered to be one of the most brutal torturers during the Argentine dictatorship of 1976-1983.

Sigifredo Nájera Talamantes (31 August 1980 – 7 September 2015), commonly referred to by his alias El Canicón, was a Mexican drug lord and high-ranking leader of Los Zetas.

Leroy Eldridge Cleaver (August 31, 1935 – May 1, 1998) was an African American writer and political activist, fashion designer, convicted rapist and an early leader of the Black Panther Party serving as Minister of Information, and while in exile, Head of the International Section of the Panthers. As editor of the official Panthers' newspaper, The Black Panther, Cleaver's influence on the direction of the party was rivaled only by founders Huey P.

Ramón Eduardo Arellano Félix (August 31, 1964 – February 10, 2002) was a Mexican drug lord who alongside his brothers founded and led the Tijuana Cartel (a.k.a. the Arellano-Félix Organization).

Commodus (; Latin: [ˈkɔmmɔdʊs]; 31 August 161 – 31 December 192) was Roman emperor from 177 to 192, first serving as nominal co-emperor under his father Marcus Aurelius and then ruling alone from 180. Commodus's sole reign is commonly thought to mark the end of the Pax Romana, a golden age of peace and prosperity in the history of the Roman Empire.

Gaius Julius Caesar Augustus Germanicus (31 August AD 12 – 24 January AD 41), also called Gaius and Caligula (), was the third Roman emperor, ruling from AD 37 until his assassination in AD 41. He was the son of the Roman general Germanicus and Augustus' granddaughter Agrippina the Elder, members of the first ruling family of the Roman Empire.